Updated the top post with a download URL for anyone brave enough to test! The OSM building footprint data came with mercator scale error, abandoned that idea, using LINZ building footprint data instead (which is apparently better than OSM/Google maps data anyway!). The buildings are simply polygons draped onto the DEM and extruded upwards 4.20 meters to form polyhedra. Known issues with this release: No materials/textures on buildings yet. Just testing FPS/performance with them at this stage. Road is a bit dodgy in places. There are gaps between the LiDAR sections, and the terrain underneath needs re-contouring to flatten the edges. No AI path, no track map and no replay cameras yet.